I fabricated a holder for this shunt from scrap plywood as it didn’t come with one. A shunt will allow me to monitor how much power is going in or out of the battery.
I’m now making the negative wire from the controller to the fuse block. And then the negative from that same terminal to the shunt.
The wire from the controller is 8 gauge and the wire to the shunt is 4 gauge.
Here I’ll add a toggle switch for the water pump. I made a small bracket from plywood for this switch. Then I’ll run a positive wire from the switch to the fuse block. This circuit in the panel will have a 10 amp fuse.
I drill two holes through the plywood. Then add two bolts to make terminals for the solar panel wires. Then I’ll make up the positive and negative wires that go from the controller to these terminals.
DIY Solar Terminals
I’m doing this to make connection and disconnection of the panel wires easier. The controller that came with the kit has terminal screws at the back. And they will be difficult to get to once I mount this board in the pump house box.
The displays also need power so there’s wires to the panel for this. I’ll attach these monitors to the plywood with velcro.
Now I’ll connect the red positive wire to the battery. Followed by the negative. If everything is wired correctly then the solar controller will show the battery voltage. And one of the monitors will show a small draw from the battery as well.
I’m sure it’s just me but I really like making up these systems and mounting and connecting all the hardware. It gives me a real sense of satisfaction.